perl/ExtMsg.pm

   1 #
   2 # This class is the internal subclass that deals with the external port
   3 # communications for Msg.pm
   4 #
   5 # This is where the cluster handles direct connections coming both in
   6 # and out
   7 #
   8 # $Id$
   9 #
  10 # Copyright (c) 2001 - Dirk Koopman G1TLH
  11 #
  12
  13 package ExtMsg;
  14
  15 use strict;
  16 use Msg;
  17 use DXVars;
  18 use DXUtil;
  19 use DXDebug;
  20 use IO::File;
  21 use IO::Socket;
  22
  23 use vars qw(@ISA $deftimeout);
  24
  25 @ISA = qw(Msg);
  26 $deftimeout = 60;
  27
  28 sub enqueue
  29 {
  30         my ($conn, $msg) = @_;
  31         unless ($msg =~ /^[ABZ]/) {
  32                 if ($msg =~ /^E[-\w]+\|([01])/) {
  33                         $conn->{echo} = $1;
  34                         if ($1) {
  35                                 $conn->send_raw("\xFF\xFC\x01");
  36                         } else {
  37                                 $conn->send_raw("\xFF\xFB\x01");
  38                         }
  39                 } else {
  40                         $msg =~ s/^[-\w]+\|//;
  41                         push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
  42                 }
  43         }
  44 }
  45
  46 sub send_raw
  47 {
  48         my ($conn, $msg) = @_;
  49     my $sock = $conn->{sock};
  50     return unless defined($sock);
  51         push (@{$conn->{outqueue}}, $msg);
  52         dbg('connect', $msg) unless $conn->{state} eq 'C';
  53     Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
  54 }
  55
  56 sub dequeue
  57 {
  58         my $conn = shift;
  59         my $msg;
  60
  61         while ($msg = shift @{$conn->{inqueue}}){
  62                 dbg('connect', $msg) unless $conn->{state} eq 'C';
  63
  64                 $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
  65                 $msg =~ s/[\x00-\x08\x0a-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
  66
  67                 if ($conn->{state} eq 'C') {
  68                         &{$conn->{rproc}}($conn, "I$conn->{call}|$msg", $!);
  69                         $! = 0;
  70                 } elsif ($conn->{state} eq 'WL' ) {
  71                         $msg = uc $msg;
  72                         if (is_callsign($msg)) {
  73                                 _send_file($conn, "$main::data/connected");
  74                                 $conn->{call} = $msg;
  75                                 &{$conn->{rproc}}($conn, "A$conn->{call}|telnet");
  76                                 $conn->{state} = 'C';
  77                         } else {
  78                                 $conn->send_now("Sorry $msg is an invalid callsign");
  79                                 $conn->disconnect;
  80                         }
  81                 } elsif ($conn->{state} eq 'WC') {
  82                         if (exists $conn->{cmd} && @{$conn->{cmd}}) {
  83                                 $conn->_docmd($msg);
  84                                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
  85                                         $conn->{state} = 'C';
  86                                         &{$conn->{rproc}}($conn, "O$conn->{call}|telnet");
  87                                         delete $conn->{cmd};
  88                                         $conn->{timeout}->del_timer if $conn->{timeout};
  89                                 }
  90                         }
  91                 }
  92         }
  93         if ($conn->{msg} && $conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}}) {
  94                 $conn->_docmd($conn->{msg});
  95                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
  96                         $conn->{state} = 'C';
  97                         &{$conn->{rproc}}($conn, "O$conn->{call}|telnet");
  98                         delete $conn->{cmd};
  99                         $conn->{timeout}->del_timer if $conn->{timeout};
 100                 }
 101         }
 102 }
 103
 104 sub new_client {
 105         my $server_conn = shift;
 106     my $sock = $server_conn->{sock}->accept();
 107     my $conn = $server_conn->new($server_conn->{rproc});
 108         $conn->{sock} = $sock;
 109
 110     my $rproc = &{$server_conn->{rproc}} ($conn, $sock->peerhost(), $sock->peerport());
 111     if ($rproc) {
 112         $conn->{rproc} = $rproc;
 113         my $callback = sub {$conn->_rcv};
 114                 Msg::set_event_handler ($sock, "read" => $callback);
 115                 # send login prompt
 116                 $conn->{state} = 'WL';
 117 #               $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
 118 #               $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
 119                 $conn->send_raw("\xFF\xFC\x01");
 120                 _send_file($conn, "$main::data/issue");
 121                 $conn->send_raw("Login: ");
 122     } else {
 123         $conn->disconnect();
 124     }
 125 }
 126
 127 sub start_connect
 128 {
 129         my $call = shift;
 130         my $fn = shift;
 131         my $conn = ExtMsg->new(\&main::rec);
 132         $conn->{call} = $call;
 133
 134         my $f = new IO::File $fn;
 135         push @{$conn->{cmd}}, <$f>;
 136         $f->close;
 137         push @main::outstanding_connects, {call => $call, conn => $conn};
 138         $conn->_dotimeout($deftimeout);
 139         $conn->_docmd;
 140 }
 141
 142 sub _docmd
 143 {
 144         my $conn = shift;
 145         my $msg = shift;
 146         my $cmd;
 147
 148         while ($cmd = shift @{$conn->{cmd}}) {
 149                 chomp $cmd;
 150                 next if $cmd =~ /^\s*\#/o;
 151                 next if $cmd =~ /^\s*$/o;
 152                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 153                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 154                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 155                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 156                         unless ($conn->_doconnect($1, $2)) {
 157                                 $conn->disconnect;
 158                                 @{$conn->{cmd}} = [];    # empty any further commands
 159                                 last;
 160                         }
 161                 }
 162                 if ($cmd =~ /^\s*\'.*\'\s+\'.*\'/i) {
 163                         $conn->_dochat($cmd, $msg);
 164                         last;
 165                 }
 166                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 167                         $conn->_doclient($1);
 168                         last;
 169                 }
 170                 last if $conn->{state} eq 'E';
 171         }
 172         unless (exists $conn->{cmd} && @{$conn->{cmd}}) {
 173                 @main::outstanding_connects = grep {$_->{call} ne $conn->{call}} @main::outstanding_connects;
 174         }
 175 }
 176
 177 sub _doconnect
 178 {
 179         my ($conn, $sort, $line) = @_;
 180         my $r;
 181
 182         dbg('connect', "CONNECT sort: $sort command: $line");
 183         if ($sort eq 'telnet') {
 184                 # this is a straight network connect
 185                 my ($host, $port) = split /\s+/, $line;
 186                 $port = 23 if !$port;
 187                 $r = $conn->connect($host, $port);
 188                 if ($r) {
 189                         dbg('connect', "Connected to $host $port");
 190                 } else {
 191                         dbg('connect', "***Connect Failed to $host $port $!");
 192                 }
 193         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 194                 ;
 195         } else {
 196                 dbg('err', "invalid type of connection ($sort)");
 197                 $conn->disconnect;
 198         }
 199         return $r;
 200 }
 201
 202 sub _doabort
 203 {
 204         my $conn = shift;
 205         my $string = shift;
 206         dbg('connect', "abort $string");
 207         $conn->{abort} = $string;
 208 }
 209
 210 sub _dotimeout
 211 {
 212         my $conn = shift;
 213         my $val = shift;
 214         dbg('connect', "timeout set to $val");
 215         $conn->{timeout}->del_timer if $conn->{timeout};
 216         $conn->{timeout} = ExtMsg->new_timer($val, sub{ _timeout($conn); });
 217         $conn->{timeval} = $val;
 218 }
 219
 220 sub _dolineend
 221 {
 222         my $conn = shift;
 223         my $val = shift;
 224         dbg('connect', "lineend set to $val ");
 225         $val =~ s/\\r/\r/g;
 226         $val =~ s/\\n/\n/g;
 227         $conn->{lineend} = $val;
 228 }
 229
 230 sub _dochat
 231 {
 232         my $conn = shift;
 233         my $cmd = shift;
 234         my $line = shift;
 235
 236         if ($line) {
 237                 my ($expect, $send) = $cmd =~ /^\s*\'(.*)\'\s+\'(.*)\'/;
 238                 if ($expect) {
 239                         dbg('connect', "expecting: \"$expect\" received: \"$line\"");
 240                         if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
 241                                 dbg('connect', "aborted on /$conn->{abort}/");
 242                                 $conn->disconnect;
 243                                 delete $conn->{cmd};
 244                                 return;
 245                         }
 246                         if ($line =~ /$expect/i) {
 247                                 dbg('connect', "got: \"$expect\" sending: \"$send\"");
 248                                 $conn->send_later($send);
 249                                 return;
 250                         }
 251                 }
 252         }
 253         $conn->{state} = 'WC';
 254         unshift @{$conn->{cmd}}, $cmd;
 255 }
 256
 257 sub _timeout
 258 {
 259         my $conn = shift;
 260         dbg('connect', "timed out after $conn->{timeval} seconds");
 261         $conn->disconnect;
 262         @main::outstanding_connects = grep {$_->{call} ne $conn->{call}} @main::outstanding_connects;
 263 }
 264
 265 # handle callsign and connection type firtling
 266 sub _doclient
 267 {
 268         my $conn = shift;
 269         my $line = shift;
 270         my @f = split /\s+/, $line;
 271         $conn->{call} = uc $f[0] if $f[0];
 272         $conn->{csort} = $f[1] if $f[1];
 273 }
 274
 275 sub _send_file
 276 {
 277         my $conn = shift;
 278         my $fn = shift;
 279
 280         if (-e $fn) {
 281                 my $f = new IO::File $fn;
 282                 if ($f) {
 283                         while (<$f>) {
 284                                 chomp;
 285                                 $conn->send_later($_);
 286                         }
 287                         $f->close;
 288                 }
 289         }
 290         $! = undef;
 291 }